Much heavier than the stone? Hardly, but it would certainly be quite a problem to handle it.

In answer to Nigel's query about the height it would be 39 feet off the ground. Hmmm.. not too easy to load up. If we can get the monolith to 80 degrees the problem is much less. The pulling force is halved, so we can use a 50 foot pole with the same weight and the height is halved because of reduced angle and halved again because of the shorter pole. So we heave a height of only 10 feet, which is much more reasonable.